However, the new research also suggests adults may not be immune to the effects, as adults also maintain a small number of progenitor cells in the areas of the brain used for learning and memory.

Researchers say they believe these cells in adults might also be attacked by Zika, leading to learning and memory impairment in adults as well.

However, this research is still in the early stages.

Zika, which is spread by mosquitos, but can be transferred from human to human through sexual contact, remains prevailant on the American continent, though the virus has made its way into Asia through travel transfers.